Planning on getting a ZR2 and swaping the original 4.3lL with a newer eco tec3 aluminium 4.3L v6. I read that they are completly different but i want to know what kind of mods would be needed to make it work, and what kind of manual tranny would go well with it (6 speed preferably). I know Ill need to swap out the computer n stuff, probably need a custon guage cluster. I also want to keep it 4x4.I understand this will be complicated thing just need help planning hit thanks